Pursuant to 49 U.S.C. 5335, FTA requires those transit agencies reporting to the NTD from urbanized areas to provide reports within 30 days of a major safety or security incident, and to provide a monthly report on minor safety and security incidents. The 2008 NTD Safety & Security Reporting Manual details the specific requirements and guidelines for safety and security reporting.

On November 21, 2007, FTA published a notice in the Federal Register (72 FR 65636) inviting comments on proposed changes to the 2008 NTD Safety & Security Reporting Manual. This notice provides responses to those comments, and announces the availability of the 2008 NTD Safety & Security Reporting Manual on the NTD Web site at http://www.ntdprogram.gov/.